My experience running a bunch of different 1060's in some 8gpu rigs:

Generally if they have Samsung ram they can be clocked to +800-950 on the RAM depending on cooling. Max out around 23mh/s stable.
Micron RAM seems to max around +150-300 depending on cooling. Max out around 20mh/s stable.

Also some of the best cards I have are the shorty single-fan cards from EVGA. If you get the ones that don't have a cheap flower cooler, they are just as good as the full size card except maybe a bit less cooling area/airflow.